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Singha S, Yahuafai J, Sutthivaiyakit S. 12-Nor-rotenoids and other cytotoxic constituents of Pachyrhizus erosus seeds. PHYTOCHEMISTRY 2024; 229:114281. [PMID: 39265878 DOI: 10.1016/j.phytochem.2024.114281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 09/05/2024] [Accepted: 09/08/2024] [Indexed: 09/14/2024]
Abstract
Five previously undescribed compounds, including three 12-nor-rotenoids, were isolated from Pachyrhizus erosus seeds. A brief survey on the dealkylation of selected rotenoids with BBr3 was undertaken. Spectroscopic data of these previously undescribed compounds and reaction products are reported. The proposal of absolute configurations at stereocenters in the isolates and reaction products was based on NMR and ECD data. Most of the isolates and reaction products were evaluated for their growth inhibitory activities against four cancer cell lines and a Vero cell line. Many compounds exhibited strong to moderate activities with IC50 values ranging from 0.06 to 20.9 μM, and their structure-activity relationships were evaluated.
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Affiliation(s)
- Suriphon Singha
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ramkhamhaeng University, Hua Mark, Bangkapi, Bangkok 10240, Thailand.
| | - Jantana Yahuafai
- Division of Research and Technology Assessment, National Cancer Institute, Rama VI Road, Bangkok 10400, Thailand.
| | - Somyote Sutthivaiyakit
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ramkhamhaeng University, Hua Mark, Bangkapi, Bangkok 10240, Thailand.
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Benhabrou H, Bitam F, Cristino L, Nicois A, Carbone M, Ammar D, Gavagnin M, Ciavatta ML. Prenyl Pterocarpans from Algerian Bituminaria bituminosa and Their Effects on Neuroblastoma. Molecules 2024; 29:3678. [PMID: 39125081 PMCID: PMC11313871 DOI: 10.3390/molecules29153678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2024] [Revised: 07/29/2024] [Accepted: 07/31/2024] [Indexed: 08/12/2024] Open
Abstract
The pterocarpan fraction from aerial parts of Bituminaria bituminosa was investigated for both chemical characterization and biological evaluation. Chemical studies were in accordance with the literature data on Bituminaria genus resulting in the identification of typical 4,8-prenyl pterocarpans. Three new members, bituminarins A-C (1-3), were isolated along with main bitucarpin A (4), erybraedin C (5) and erybraedin D (6) already reported from this plant. Further, biological studies evidenced antiproliferative properties of the most abundant pterocarpans 4 and 5 on neuroblastoma SH-SY5Y cell line, in agreement with previously described antiproliferative activity of these compounds against cancer cell lines other than neuroblastoma. The structure and the stereochemistry of the new molecules was determined by extensive spectroscopic analysis and chemical derivatization methods. The biological investigation was carried out by using an assay platform based on a live-cell imaging system revealing an apoptotic cell death induction.
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Affiliation(s)
- Hakim Benhabrou
- Université de Batna 1, Faculté des Sciences de la Matière, Département de Chimie, Laboratoire de Chimie et Chimie de l’Environnement (LCCE), Batna 05000, Algeria; (H.B.); (D.A.)
| | - Fatma Bitam
- Université de Batna 2, Faculté de Médecine, Département de Pharmacie, Batna 05000, Algeria;
| | - Luigia Cristino
- Consiglio Nazionale delle Ricerche, Istituto di Chimica Biomolecolare, Via Campi Flegrei 34, 80078 Pozzuoli, Italy; (A.N.); (M.C.); (M.G.)
| | - Alessandro Nicois
- Consiglio Nazionale delle Ricerche, Istituto di Chimica Biomolecolare, Via Campi Flegrei 34, 80078 Pozzuoli, Italy; (A.N.); (M.C.); (M.G.)
- Università di Urbino ‘Carlo Bo’, Dipartimento di Scienze Biomolecolari, Via Santa Chiara, 27, 61029 Urbino, Italy
| | - Marianna Carbone
- Consiglio Nazionale delle Ricerche, Istituto di Chimica Biomolecolare, Via Campi Flegrei 34, 80078 Pozzuoli, Italy; (A.N.); (M.C.); (M.G.)
| | - Dibi Ammar
- Université de Batna 1, Faculté des Sciences de la Matière, Département de Chimie, Laboratoire de Chimie et Chimie de l’Environnement (LCCE), Batna 05000, Algeria; (H.B.); (D.A.)
| | - Margherita Gavagnin
- Consiglio Nazionale delle Ricerche, Istituto di Chimica Biomolecolare, Via Campi Flegrei 34, 80078 Pozzuoli, Italy; (A.N.); (M.C.); (M.G.)
| | - Maria Letizia Ciavatta
- Consiglio Nazionale delle Ricerche, Istituto di Chimica Biomolecolare, Via Campi Flegrei 34, 80078 Pozzuoli, Italy; (A.N.); (M.C.); (M.G.)
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The Roots of Neorautanenia mitis (A. Rich) Verdcourt: Further Evidence of Its Antidiarrhoeal Activity. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020673. [PMID: 36677731 PMCID: PMC9863173 DOI: 10.3390/molecules28020673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 12/15/2022] [Accepted: 12/24/2022] [Indexed: 01/11/2023]
Abstract
Despite the current management options and therapeutics used in the treatment of diarrhoea, in Africa and Asia, diarrhoea remains a major concern, especially in children under the age of 5 years. Traditional knowledge of medicinal plants used in the management of diarrhoea symptoms can be explored for their efficacy. In Nigeria, the TMPs (Traditional Medicine Practitioners) have, over the years, employed medicinal plants in the management of diarrhoea symptoms. In our current and previous studies, we aimed at validating the effectiveness of Neorautanenia mitis in the management of diarrhoea as claimed by the TMPs. Out of the 20 compounds isolated from N. mitis, the compounds neodulin, pachyrrhizine, neotenone and dolineone were the most abundant, and in this study, neodulin showed a pronounced relaxation of the rhythmic contraction of the isolated rabbit jejunum in an organ bath in a concentration-dependent manner, with a complete relaxation at 60 µg/mL. Neotenone and dolineone showed a dose-dependent inhibition of defecation of 65.07%, and 50.01%, respectively, at 20 mg/kg in a castor-oil-induced diarrhoea model. This is a strong indication that compounds from N. mitis possess antidiarrhoeal properties, thereby giving credence to its traditional usage in diarrhoea therapy, and therefore validating its antidiarrhoeal activity and its being worthy of further investigation.
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Zhang Q, Miao YH, Liu T, Yun YL, Sun XY, Yang T, Sun J. Natural source, bioactivity and synthesis of 3-Arylcoumarin derivatives. J Enzyme Inhib Med Chem 2022; 37:1023-1042. [PMID: 35438580 PMCID: PMC9037183 DOI: 10.1080/14756366.2022.2058499] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
3-arylcoumarins with different pharmacological properties widely exist in a variety of natural plants. The extensive research on 3-arylcoumarins was attributed to its therapeutic and relatively easy isolation. Therefore, 3-arylcoumarins can be recognised as useful structures for the design of novel compounds with potential pharmacological interest, particularly in the fields of anti-inflammatory, anti-cancer, antioxidant, Monoamine oxidase (MAO) enzyme inhibition, etc. The current review highlights the biological activities, design, and chemical synthetic methods of 3-arylcoumarins derivatives as well as their important natural product sources.
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Affiliation(s)
- Qiang Zhang
- Institute of Materia Medica, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Yu-Hang Miao
- Institute of Materia Medica, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Teng Liu
- Institute of Materia Medica, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Yin-Ling Yun
- Institute of Materia Medica, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Xiao-Ya Sun
- Institute of Materia Medica, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Tao Yang
- Department of Thoracic and Cardiovascular Surgery, First Affiliated Hospital of Chongqing Medical University, Chongqing, Chongqing, China
| | - Jie Sun
- Institute of Materia Medica, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, China
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Dawurung CJ, Nguyen MTH, Pengon J, Dokladda K, Bunyong R, Rattanajak R, Kamchonwongpaisan S, Nguyen PTM, Pyne SG. Isolation of bioactive compounds from medicinal plants used in traditional medicine: Rautandiol B, a potential lead compound against Plasmodium falciparum. BMC Complement Med Ther 2021; 21:231. [PMID: 34517853 PMCID: PMC8438977 DOI: 10.1186/s12906-021-03406-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 09/02/2021] [Indexed: 11/16/2022] Open
Abstract
Background Neorautanenia mitis, Hydnora abyssinica, and Senna surattensis are medicinal plants with a variety of traditional uses. In this study, we sought to isolate the bioactive compounds responsible for some of these activities, and to uncover their other potential medicinal properties. Methods The DCM and ethanol extracts of the roots of N. mitis and H. abyssinica, and the leaves of S. surattensis were prepared and their phytochemical components were isolated and purified using chromatographic methods. These extracts and their pure phytochemical components were evaluated in in-vitro models for their inhibitory activities against Plasmodium falciparum, Trypanosoma brucei rhodesiense, Mycobacterium tuberculosis, α-amylase (AA), and α-glucosidase (AG). Results Rautandiol B had significant inhibitory activities against two strains of Plasmodium falciparum showing a high safety ratio (SR) and IC50 values of 0.40 ± 0.07 μM (SR - 108) and 0.74 ± 0.29 μM (SR - 133) against TM4/8.2 and K1CB1, respectively. While (−)-2-isopentenyl-3-hydroxy-8-9-methylenedioxypterocarpan showed the highest inhibitory activity against T. brucei rhodesiense with an IC50 value of 4.87 ± 0.49 μM (SR > 5.83). All crude extracts showed inhibitory activities against AA and AG, with three of the most active phytochemical components; rautandiol A, catechin, and dolineon, having only modest activities against AG with IC50 values of 0.28 mM, 0.36 mM and 0.66 mM, respectively. Conclusion These studies have led to the identification of lead compounds with potential for future drug development, including Rautandiol B, as a potential lead compound against Plasmodium falciparum. The relatively higher inhibitory activities of the crude extracts against AG and AA over their isolated components could be due to the synergistic effects between their phytochemical components. These crude extracts could potentially serve as alternative inhibitors of AG and AA and as therapeutics for diabetes. Supplementary Information The online version contains supplementary material available at 10.1186/s12906-021-03406-y.
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Affiliation(s)
- Christiana J Dawurung
- School of Chemistry and Molecular Bioscience, Faculty of Science Medicine and Health, University of Wollongong, Wollongong, NSW, 2522, Australia. .,Department of Veterinary Physiology, Biochemistry and Pharmacology University of Jos, Jos Plateau State, Nigeria.
| | - Minh T H Nguyen
- Department of Life Science, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Jutharat Pengon
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani, 12120, Thailand
| | - Kanchana Dokladda
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani, 12120, Thailand
| | - Ratchanu Bunyong
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani, 12120, Thailand
| | - Roonglawan Rattanajak
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani, 12120, Thailand
| | - Sumalee Kamchonwongpaisan
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani, 12120, Thailand
| | - Phuong T M Nguyen
- Department of Plant Biochemistry, Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hannoi, Vietnam
| | - Stephen G Pyne
- School of Chemistry and Molecular Bioscience, Faculty of Science Medicine and Health, University of Wollongong, Wollongong, NSW, 2522, Australia
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Dawurung CJ, Noitem R, Rattanajak R, Bunyong R, Richardson C, Willis AC, Kamchonwongpaisan S, Yimnual C, Muanprasat C, Pyne SG. Isolation of CFTR and TMEM16A inhibitors from Neorautanenia mitis (A. Rich) Verdcourt: Potential lead compounds for treatment of secretory diarrhea. PHYTOCHEMISTRY 2020; 179:112464. [PMID: 32798746 DOI: 10.1016/j.phytochem.2020.112464] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 07/14/2020] [Accepted: 07/19/2020] [Indexed: 06/11/2023]
Abstract
A phytochemical study on the root extracts of Neorautanenia mitis, a Nigerian medicinal plant used in the management of diarrhea, led to the isolation of one new and 19 known natural products. These compounds and crude extracts were evaluated for Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) Cl- channel and calcium-activated Cl- channel (TMEM16A) inhibitory activities in T84 and Calu-3 cells, respectively. Four compounds namely dolineon, neodulin, pachyrrhizine, and neotenone inhibited cAMP-induced Cl- secretion across T84 cell monolayers with IC50 values of ~0.81 μM, ~2.42 μM, ~2.87 μM, and ~4.66 μM, respectively. Dolineon having the highest inhibitory activity also inhibited a Ca + activated Cl- channel (TMEM16A) with an IC50 value of ~4.38 μM. The in vitro antidiarrheal activity of dolineon was evaluated on cholera toxin (CT) induced chloride secretion in T84 cells, where it inhibited CT-induced chloride secretion by >70% at 100 μM. Dolineon also inhibited CT-induced fluid secretion by ~70% in an in vivo mouse closed loop model at a dose of 16.9 μg/loop. The cytotoxicity of the extracts and compounds was evaluated on KB, Vero and BHK21 cells, dolineon showed low cytotoxicity of >29.6 μM and 57.30 + 6.77 μM against Vero and BHK21 cells, respectively. Our study revealed that several compounds isolated from N. mitis showed antidiarrheal activity. The most active compound dolineon can potentially serve as a lead compound towards the development of CFTR and TMEM16A inhibitors as future therapeutics for secretory diarrhea.
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Affiliation(s)
- Christiana J Dawurung
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia; Department of Veterinary Physiology, Biochemistry and Pharmacology, University of Jos, Jos Plateau State, Nigeria.
| | - Rattikarn Noitem
- Division of Preclinical Sciences, Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Samutprakarn, 10540, Thailand.
| | - Roonglawan Rattanajak
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani, 12120, Thailand.
| | - Ratchanu Bunyong
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani, 12120, Thailand.
| | - Christopher Richardson
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia.
| | - Anthony C Willis
- Research School of Chemistry, The Australian National University, Canberra, ACT, 2601, Australia.
| | - Sumalee Kamchonwongpaisan
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani, 12120, Thailand.
| | - Chantapol Yimnual
- Division of Preclinical Sciences, Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Samutprakarn, 10540, Thailand.
| | - Chatchai Muanprasat
- Division of Preclinical Sciences, Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Samutprakarn, 10540, Thailand.
| | - Stephen G Pyne
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia.
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Dawurung C, Gotep J, Usman J, Elisha I, Lombin L, Pyne S. Antidiarrheal activity of some selected Nigerian plants used in traditional medicine. Pharmacognosy Res 2019. [DOI: 10.4103/pr.pr_43_19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Pterocarpan scaffold: A natural lead molecule with diverse pharmacological properties. Eur J Med Chem 2017; 128:219-236. [PMID: 28189086 DOI: 10.1016/j.ejmech.2017.01.023] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 01/12/2017] [Accepted: 01/13/2017] [Indexed: 12/22/2022]
Abstract
Phytoalexins are substances produced by plants that act as potent inhibitors of pathogens. Pterocarpans are biologically active isoflavonoids most commonly found in the family Fabaceae that have the ability to act as phytoalexins. It is made up of a tetracyclic ring system possessing benzofuran-benzopyran. A very great number of pterocarpans have been isolated from natural sources and they are proved to have significant biological activities such as anti-microbial, anti-cancerous, anti-inflammatory and anti-malarial activities. Recently, pterocarpans gained lot of attention because of the broad range of anti-cancer activities in various cancer cell lines such as breast, leukemia, cervical, lung, colon and melanoma. Interestingly, pterocarpans exhibited inhibitory potency against many enzymes such as PTP1B, Neuraminidase, and α-glycosidase. In addition, they were shown to have anti-estrogenic and anti-diabetic activities. This review is a comprehensive inventory of the structures and sources of pterocarpans and it emphasizes on the biological evaluations of pterocarpans from various plant sources and their scope as a lead molecule.
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Neoraudiol, a new isoflavonoid and other antimicrobial constituents from the tuberous root of Neorautanenia mitis (A. Rich) Verdcourt. JOURNAL OF SAUDI CHEMICAL SOCIETY 2015. [DOI: 10.1016/j.jscs.2012.04.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Estrella-Parra EA, Gomez-Verjan JC, González-Sánchez I, Vázquez-Martínez ER, Vergara-Castañeda E, Cerbón MA, Alavez-Solano D, Reyes-Chilpa R. Rotenone isolated from Pachyrhizus erosus displays cytotoxicity and genotoxicity in K562 cells. Nat Prod Res 2014; 28:1780-5. [DOI: 10.1080/14786419.2014.939081] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Edgar A. Estrella-Parra
- Departamento de Productos Naturales, Instituto de Química, Universidad Nacional Autónoma de México, Mexico City, D.F.Mexico
| | - Juan C. Gomez-Verjan
- Departamento de Productos Naturales, Instituto de Química, Universidad Nacional Autónoma de México, Mexico City, D.F.Mexico
| | - Ignacio González-Sánchez
- Departamento de Productos Naturales, Instituto de Química, Universidad Nacional Autónoma de México, Mexico City, D.F.Mexico
- Departamento de Biología, Facultad de Química, Universidad Nacional Autónoma de México, Mexico City, D.F.Mexico
| | | | - Edgar Vergara-Castañeda
- Departamento de Biología, Facultad de Química, Universidad Nacional Autónoma de México, Mexico City, D.F.Mexico
| | - Marco A. Cerbón
- Departamento de Biología, Facultad de Química, Universidad Nacional Autónoma de México, Mexico City, D.F.Mexico
| | - Dagoberto Alavez-Solano
- Departamento de Biología, Facultad de Ciencias, Universidad Autónoma Benito Juárez de Oaxaca, Oaxaca, Mexico
| | - Ricardo Reyes-Chilpa
- Departamento de Productos Naturales, Instituto de Química, Universidad Nacional Autónoma de México, Mexico City, D.F.Mexico
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Fast method for the simultaneous quantification of toxic polyphenols applied to the selection of genotypes of yam bean (Pachyrhizus sp.) seeds. Talanta 2013; 117:94-101. [PMID: 24209316 DOI: 10.1016/j.talanta.2013.08.038] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 08/10/2013] [Accepted: 08/23/2013] [Indexed: 11/20/2022]
Abstract
The purpose of the research was to develop and validate a rapid quantification method able to screen many samples of yam bean seeds to determine the content of two toxic polyphenols, namely pachyrrhizine and rotenone. The analytical procedure described is based on the use of an internal standard (dihydrorotenone) and is divided in three steps: microwave assisted extraction, purification by solid phase extraction and assay by ultra high performance liquid chromatography (UHPLC). Each step was included in the validation protocol and the accuracy profiles methodology was used to fully validate the method. The method was fully validated between 0.25 mg and 5 mg pachyrrhizin per gram of seeds and between 0.58 mg/g and 4 mg/g for rotenone. More than one hundred samples from different accessions, locations of growth and harvest dates were screened. Pachyrrhizine concentrations ranged from 3.29 mg/g to lower than 0.25 mg/g while rotenone concentrations ranged from 3.53 mg/g to lower than 0.58 mg/g. This screening along with principal component analysis (PCA) and discriminant analysis (DA) analyses allowed the selection of the more interesting genotypes in terms of low concentrations of these two toxic polyphenols.
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Nguyen PH, Nguyen TNA, Kang KW, Ndinteh DT, Mbafor JT, Kim YR, Oh WK. Prenylated pterocarpans as bacterial neuraminidase inhibitors. Bioorg Med Chem 2010; 18:3335-44. [DOI: 10.1016/j.bmc.2010.03.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2010] [Revised: 03/03/2010] [Accepted: 03/04/2010] [Indexed: 11/16/2022]
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dos Santos DAP, Braga PADC, da Silva MFDGF, Fernandes JB, Vieira PC, Magalhães AF, Magalhães EG, Marsaioli AJ, Moraes VRDS, Rattray L, Croft SL. Anti-African trypanocidal and antimalarial activity of natural flavonoids, dibenzoylmethanes and synthetic analogues. J Pharm Pharmacol 2010. [DOI: 10.1211/jpp.61.02.0017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
Objectives
The known anti-protozoal activity of flavonoids has stimulated the testing of other derivatives from natural and synthetic sources.
Methods
As part of our efforts to find potential lead compounds, a number of flavonoids isolated from Neoraputia paraensis, N. magnifica, Murraya paniculata, (Rutaceae), Lonchocarpus montanus, L. latifolius, L. subglaucescens, L. atropurpureus, L. campestris, Deguelia hatschbachii (Leguminosae), dibenzoylmethanes from L. subglaucescens and synthetic analogues were tested for in-vitro activity against chloroquine-sensitive Plasmodium falciparum and Trypanosoma brucei rhodesiense bloodstream form trypomastigotes. An assay withKB cells has been developed inorder tocompare in-vitro cytotoxicityof flavonoids with a selective action on the parasites.
Key findings
Thirteen of the compounds tested had IC50 values ranging from 4.6 to 9.9 μM against T. brucei rhodesiense. In contrast, a small number of compounds showed significant activity against P. falciparum; seven of those tested had IC50 values ranging from 2.7 to 9.5 μM. Among the flavones only one had IC50 < 10 μM (7.6 μM), whereas against T. brucei rhodesiense seven had IC50 < 10 μM. Synthetic dibenzoylmethanes were the most active in terms of number (five) of compounds and the IC50 values (2.7–9.5 μM) against P. falciparum.
Conclusions
Dibenzoylmethanes represent a novel class of compounds tested for the first time as antimalarial and trypanocidal agents.
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Affiliation(s)
| | | | | | - João B Fernandes
- Departamento de Química, Universidade Federal de São Carlos, São Carlos, Brazil
| | - Paulo C Vieira
- Departamento de Química, Universidade Federal de São Carlos, São Carlos, Brazil
| | | | - Eva G Magalhães
- Instituto de Química, Universidade Estadual de Campinas, Campinas, Brazil
| | - Anita J Marsaioli
- Instituto de Química, Universidade Estadual de Campinas, Campinas, Brazil
| | | | - Lauren Rattray
- Department of Infections and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK
| | - Simon L Croft
- Department of Infections and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK
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Nguyen PH, Le TVT, Thuong PT, Dao TT, Ndinteh DT, Mbafor JT, Kang KW, Oh WK. Cytotoxic and PTP1B inhibitory activities from Erythrina abyssinica. Bioorg Med Chem Lett 2009; 19:6745-9. [DOI: 10.1016/j.bmcl.2009.09.108] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2009] [Revised: 09/15/2009] [Accepted: 09/28/2009] [Indexed: 11/26/2022]
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Magadula JJ, Erasto P. Bioactive natural products derived from the East African flora. Nat Prod Rep 2009; 26:1535-54. [PMID: 19936385 DOI: 10.1039/b906089h] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review describes bioactive natural products isolated from East African medicinal plants. It includes 211 bioactive compounds from 41 plant species, and cites 116 references.
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Affiliation(s)
- Joseph J Magadula
- Institute of Traditional Medicine, Muhimbili University of Health and Allied Sciences, P.O. Box 65001, Dar es Salaam, Tanzania
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Hou XL, Yang Z, Yeung KS, Wong HN. Chapter 5.3 Five-membered ring systems: furans and benzofurans. PROGRESS IN HETEROCYCLIC CHEMISTRY 2008. [DOI: 10.1016/s0959-6380(08)80009-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Kikuchi H, Ohtsuki T, Koyano T, Kowithayakorn T, Sakai T, Ishibashi M. Brandisianins A-F, isoflavonoids isolated from Millettia brandisiana in a screening program for death-receptor expression enhancement activity. JOURNAL OF NATURAL PRODUCTS 2007; 70:1910-1914. [PMID: 18039011 DOI: 10.1021/np0703904] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
In a screening study for natural products with tumor-selective apoptosis-inducing properties, six new isoflavonoids (1- 6), named brandisianins A-F, respectively, have been isolated from a MeOH extract of the dried leaves of Millettia brandisiana, together with five known compounds. The structures of the new compounds were elucidated by spectroscopic data interpretation. Among these compounds, brandisianin D (4) exhibited death-receptor 5 expression enhancement activity in a luciferase assay based in DLD-1/ SacI cells. The results suggest that brandisianin D (4) might overcome TRAIL-resistance by an increase in DR5 expression.
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Affiliation(s)
- Hiroyuki Kikuchi
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
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21
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Wätjen W, Kulawik A, Suckow-Schnitker AK, Chovolou Y, Rohrig R, Ruhl S, Kampkötter A, Addae-Kyereme J, Wright CW, Passreiter CM. Pterocarpans phaseollin and neorautenol isolated from Erythrina addisoniae induce apoptotic cell death accompanied by inhibition of ERK phosphorylation. Toxicology 2007; 242:71-9. [PMID: 17964704 DOI: 10.1016/j.tox.2007.09.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2007] [Revised: 09/07/2007] [Accepted: 09/10/2007] [Indexed: 10/22/2022]
Abstract
The genus Erythrina (Leguminosae), consisting of over 100 different species, is distributed in tropical regions. In traditional medicine, Erythrina species are used to treat cancer, but little is known about the anticancer mechanisms. From the stem bark of Erythrina addisoniae Hutch. & Dalziel, six prenylated pterocarpans were isolated and analysed for pharmacological activity: While calopocarpin, cristacarpin, orientanol c, and isoneorautenol showed only a weak or moderate toxicity in H4IIE hepatoma cells (EC(50)-value> 25 microM), the toxicity of neorautenol and phaseollin was in the low micromolar range (EC(50)-value: 1 and 1.5 microM, respectively). We further focused on these two substances showing that both increased caspase 3/7 activity and nuclear fragmentation as markers for apoptotic cell death. Neorautenol (10 microM, 2h), but not phaseollin induced the formation of DNA strand breaks (comet assay). Both substances showed no effect on NF-kappaB signalling (SEAP assay: basal activity and stimulation with TNF-alpha), on the other hand both pterocarpans (10 microM, 2 h) decreased the activation of the ERK kinase (p44/p42), an mitogen activated protein kinase which is associated with cell proliferation. We conclude that the pterocarpans phaseollin and neorautenol may be responsible for the anticarcinogenic actions of the plant extract reported in the literature. Further analysis of these substances may lead to new pharmacons to be used in cancer therapy.
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Affiliation(s)
- W Wätjen
- Heinrich-Heine-Universität, Institute of Toxicology, 40001, Düsseldorf, Germany.
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Jang JH, Kanoh K, Adachi K, Shizuri Y. New Dihydrobenzofuran Derivative, Awajanoran, from Marine-derived Acremonium sp. AWA16-1. J Antibiot (Tokyo) 2006; 59:428-31. [PMID: 17025019 DOI: 10.1038/ja.2006.60] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Awajanoran (1), a new dihydrobenzofuran derivative, was isolated from an agar-culture of Acremonium sp. AWA16-1, which had been isolated from sea mud collected at Awajishima Island in Japan. The structure of 1 was elucidated on the basis of a spectroscopic analysis. This compound inhibited the growth of A549 cells, the human lung adenocarcinoma cell line, with an IC50 value of 17 microg/ml, and also showed antimicrobial activity.
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Affiliation(s)
- Jae-Hyuk Jang
- Marine Biotechnology Institute Co. Ltd., 3-75-1 Heita, Kamaishi, Iwate 026-0001, Japan.
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